▎ 摘　　要

NOVELTY - A carbon material dispersion comprises at least one carbon material chosen from carbon black, carbon fiber, carbon nanotubes, graphite, and graphene, an organic solvent, and a polymer dispersant, and has an amine value of 100 mg potassium hydroxide/g or less and a number average molecular weight of 5000-20000. The polymer dispersant contains a polymer comprises 3-55 %mass amine-containing structural unit (I), 45-90 %mass propanone-containing structural unit (II), and 0.5-20 %mass other structural units connected to these structural units. USE - Carbon material dispersion liquid used for manufacturing paints, inks, plastic products, battery materials, electronic component trays, integrated circuit chip covers, electromagnetic wave shields, automobile components, and robot components. ADVANTAGE - The carbon material dispersion liquid provides coating film having excellent conductivity. DETAILED DESCRIPTION - A carbon material dispersion comprises at least one carbon material chosen from carbon black, carbon fiber, carbon nanotubes, graphite, and graphene, an organic solvent, and a polymer dispersant, and has an amine value of 100 mg potassium hydroxide/g or less and a number average molecular weight of 5000-20000. The polymer dispersant contains a polymer comprises 3-55 %mass amine-containing structural unit of formula (I), 45-90 %mass propanone-containing structural unit of formula (II), and 0.5-20 %mass other structural units connected to these structural units. R = H or methyl; A = O or NH; B' = ethylene or propylene; R1,R2 = methyl or ethyl; Ar' = phenyl, naphthyl, anthracenyl, or pyrenyl; X = chloro, bromo, bis(trifluoromethane)sulfonimide, or bis(nonafluorobutanesulfonyl)imide; p = arbitrary number of repetitions; Q = ethylene or methylethylene; Y' = O, NHCOO or NHCONH,; m,n = 0 or more; m+n = 20-100; R3 = alkyl, aryl, or 1-18C alkylaryl group;and r = arbitrary number of repetitions.